"For the oil burning furnaces, you should check the pump pressure. Older furnaces run at 100psi, and newer ones run at 140psi. When the pressure is higher, you need to cross reference the nozzle size to get proper Btu ratings. Plenty of reference…"

"most mobile homes look like blanket. If the squial cage looks like this so does the AC coil. Look at the return air ducts - If I can pop the end cap put some light and see the dirt and fiber. I found one return so dirty…"

"Providing combustion air for a furnace can be tricky. The NFPA 54 calls for a minimum 50cuft/1000btu/hr for combustion air. However, how the combustion air is brought into the combustion appliance zone determines what size venting and how it should…"

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